I've upgraded my Trek 920 Disc (2016) bike with Shimano Tiagra ST-4720 Dual Control Levers.
At the same time I've also replaced the disc brake calipers (Shimano BR-MT420) and the rear (Shimano Tiagra RD-4700-GS) and front derailleurs (Shimano Tiagra FD-4700-B).
Everything works well, except for the front derailleur which does not seem to move enough. Meaning that the chain either remains in the lower or higher gear and changing gear is - if possible at all - very rare.
In other words, I have the impression that the spacing between the two front chainrings (of the SRAM S1000, 42/28T crankset) is too big for what the front derailleur is capable of doing.
I suspect a compatibility issue between my front derailleur and the chainrings/crankset. I have tried to look up some specifications about the chainring spacing and the maximal movement of the front derailleur but without success.
Any suggestion on how to make this last piece of the puzzle working would be highly appreciated!